package com.javarush.task.task04.task0428;

import java.io.*;
import java.util.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int a = Integer.parseInt(reader.readLine());
        int b = Integer.parseInt(reader.readLine());
        int c = Integer.parseInt(reader.readLine());

            if(a>0&&b>0&&c>0) {
            System.out.println("3");}
                else if(a>0&&b>0||a>0&&c>0||c>0&&b>0) {
                System.out.println("2");}
                    else if(a>0||b>0||c>0) {
                    System.out.println("1");}
                        else if(a<0&&b<0&&c<0) {
                        System.out.println("0");}
}
    }